Earth and the Sun's Energy

What is the source of the thermal energy that heats our planet’s atmosphere?

• Earth's core

• Green plants

• The Sun

• Fossil Fuels

Winds in the Northern Hemisphere shift in a clockwise direction. What causes this change in direction?

• The magnetic field of Earth

• The gravitational pull of the Moon

• The rotation of Earth

• The heat generated by the Sun’s energy

The hemisphere of Earth that is tilted away from the sun receives less direct ____________ than the other hemisphere receives.

• solar energy

• revolution

• tropics

• latitude

• rotation

An umbrella might be more useful to a person in the ____________than a winter coat.

• latitude

• revolution

• rotation

• solar energy

• tropics

Earth’s path, or orbit, around the sun is its ___________.

• latitude

• revolution

• rotation

• solar energy

• tropics

One revolution of Earth takes 24 hours.

• latitude

• revolution

• rotation

• solar energy

• tropics

Plants in a high latitude receive less direct solar energy during the year than plants at a lower ______________ because they are farther from the equator

• latitude

• revolution

• rotation

• solar energy

• tropics

The higher latitudes are cooler than the lower latitudes.

• true

• false

Earth’s tilt causes the seasons.

• true

• false

The tropics are regions close to the equator.

• true

• false